Now that bikes have become incredibly light and stiff, the new frontier in bicycle product design is aerodynamics. After all, a bike is only as aero as the rider on it. Helmets are one of the biggest factors in a rider’s aerodynamics on a bike, and you’ve likely seen those enormous time trial helmets that look like the villain from the movie “Alien”.

Three major players in the helmet market, Giro, Bell and Smith, have unveiled new aero helmets in the past few weeks.